_131_I_chTNT诱导淋巴瘤Raji细胞凋亡的实验研究_孙步彤
- 格式:pdf
- 大小:298.50 KB
- 文档页数:3
FAPα靶向标记化合物131I-FAPI-03的合成及初步体内外实验研究马 欢1,2, 廖家莉2, 杨远友2, 刘 宁2, 李飞泽2(1. 四川省医学科学院 四川省人民医院(电子科技大学附属医院) 核医学科,成都 610072;2. 四川大学 原子核科学技术研究所,辐射物理及技术教育部重点实验室,成都 610064)摘要:本研究以4-喹啉基-甘氨基-2-氰基吡咯烷为骨架,对连接基团进行碳链延长及羟基修饰成功合成FAPI 衍生物ATE-FAPI-03;通过亲电取代反应实现其131I 标记,并对标记化合物131I-FAPI-03的脂水分配比、体外稳定性等进行分析;开展细胞结合、内吞、流出等实验以评价131I-FAPI-03的体外动力学特征;并考察了131I-FAPI-03在荷胶质瘤小鼠体内的分布情况。
结果表明:131I-FAPI-03为亲脂性小分子,并具有良好的体外稳定性;与FAPα阳性细胞U87MG 孵育10 min 时的结合率为(22.00 ± 0.35)%,且随着孵育时间的延长结合率有明显的上升趋势,而与FAPα阴性细胞MCF-7的结合率始终处于较低水平;通过竞争结合实验测得131I-FAPI-03的IC 50值为45.5 nM ,表明其对FAPα具有较高的亲和力;大部分与U87MG 细胞结合的131I-FAPI-03可被细胞内吞,但其在细胞中的滞留能力偏低。
131I-FAPI-03在荷胶质瘤小鼠体内具有快速的肿瘤靶向能力:经尾静脉注射5 min 后,肿瘤组织对131I-FAPI-03的放射性摄取值为(14.90 ±3.21)% ID/g ,注射2 h 后,肿瘤/肌肉的放射性摄取比值达到(43.7 ± 16.7)。
上述结果为新型FAPα靶向药物的研发提供了重要的参考。
关键词:FAPα;131I ;FAPI ;胶质瘤中图分类号:TL92+3 文献标志码:A 文章编号:1000-7512(2024)02-0097-09doi :10.7538/tws.2024.37.02.0097Synthesis and Preliminary Evaluation of FAPα Targeted Tracer 131I-FAPI-03MA Huan 1,2, LIAO Jiali 2, YANG Yuanyou 2, LIU Ning 2, LI Feize2(1. Department of Nuclear Medicine , Sichuan Provincial People’s Hospital ,University of Electronic Science and Technology of China , Chengdu 610072, China ;2. Key Laboratory of Radiation Physics and Technology of the Ministry of Education ,Institute of Nuclear Science and Technology , Sichuan University , Chengdu 610064, China )Abstract: Using N-(4-quinolinoyl)-Gly-(2-cyanopyrrolidine) as scaffold ,we prolonged the linker with serine to obtain a FAPI derivative ATE-FAPI-03,which was subsequently labeled with131I byelectrophilic substitution. Then the in vitro stability ,Log P value ,binding affinity ,targeting properties and biodistribution behavior of 131I-FAPI-03 was evaluated. Results show that 131I-FAPI-03 was lipophilic and stable in vitro ,capable of specifically binding to FAPα-positive U87MG cells收稿日期:2023-12-04;修回日期:2024-01-18基金项目:中央高校基本科研业务费专项资金资助(2023SCU12132);四川省医学科学院.四川省人民医院青年人才基金(2022QN32)通信作者:李飞泽第37卷 第2期同 位 素Vol. 37 No. 22024年 4 月Journal of IsotopesApr. 2024fast with a major proportion trapped intracellularly. After 10 min of incubation,131I-FAPI-03 showed a specific binding rate of (22.00 ± 0.35)%,and the binding rate increased with the incubation time,to a peak of (37.5 ± 0.83)% at 180 min. However,the FAPα-negative MCF-7 cells exhibited very low uptake of 131I-FAPI-03 at any time point. The IC50 measured by the competition assay indicated significant binding property of 131I-FAPI-03. Biodistribution studies revealed that 131I-FAPI-03 could rapidly accumulate in tumor sites with an uptake of (14.90 ± 3.21)% ID/g at 5 min post injection. At 2 h post injection,131I-FAPI-03 displayed the highest tumor-to-muscle ratio of 43.7 ± 16.7. All above results provided important reference for the development of novel FAPα-targeting tracers.Key words: FAPα; 131I; FAPI; glioma肿瘤相关成纤维细胞(CAF)作为肿瘤微环境的主要组成部分,积极参与细胞外基质结构的重塑、肿瘤侵袭与转移、免疫抑制和耐药生成过程[1-3]。
作者: 刘保良;王东升;陈长青;刁振琦;齐健;张建民;唐伟跃
作者机构: 郑州大学物理工程学院,河南郑州450001
出版物刊名: 郑州铁路职业技术学院学报
页码: 51-55页
年卷期: 2013年 第2期
主题词: 131I;光谱手段;剂量;人宫颈癌细胞;红外光谱
摘要:目的:研究不同剂量131I辐照损伤宫颈癌细胞的有效途径和较佳放射剂量。
方法:采集宫颈癌细胞经不同剂量的131I辐照后的红外光谱,比较放射源各剂量组光谱间的差异,分析不同剂量的射线对细胞造成的辐射损伤。
结果:10mCi131I照射组多条谱线变化最为明
显,1542cm^-1谱带在10mCi照射组红移最多达7cm^-1,1162cm^-1向低波数频移5cm^-1,2850cm^-1谱带蓝移4cm^-1,酰胺I带、II带的相对峰强比I1654/I1542数值最小。
结论:本实验为寻求新的光谱手段研究宫颈癌治疗效果及临床拟定宫颈癌的放疗剂量提供实验依据和参考。
131I -Herceptin 对乳腺癌细胞株的体外杀伤效应林菁 罗荣城 费丽华 方永鑫 严晓 丁雪梅 摘 要:【目的】研究同位素131I标记Herceptin对Her-2表达阳性乳腺癌细胞的特异性杀伤作用。
为进一步放射免疫导向治疗奠定基础。
【方法】应用IODO-GEN标记方法将131I和抗Her-2单克隆抗体Herceptin标记,取相同浓度的131I-Herceptin 分别与 SK-BR-3、MCF7、A549三种Her-2表达程度不同的细胞进行体外杀伤实验,MTT法检测其对不同细胞生长的抑制作用。
【结果】131I-Herceptin的免疫活性与Herceptin无差异。
131I-Herceptin对Her-2表达阳性的肿瘤细胞的杀伤作用较Herceptin、131I明显增强(P<0.05),对于Her-2表达阴性或弱阳性的肿瘤细胞无明显杀伤作用。
【结论】131I-Herceptin 可特异性杀伤Her-2表达阳性的肿瘤细胞。
关键词:放射免疫导向治疗;131I;Herceptin;标记The Killing Effect of 131I -Herceptin on Breast Cancer Line in VitroLIN jing , LUO Rong –cheng , FEI Li-hua, FANG yong-xin, YAN xiao, DING xue-meiCenter of Oncology, Nanfang Hospital, Nanfang Medical University, Guangzhou 510515, ChinaAbstract: [Objective] To study the specific killing effect of the Herceptin labeled 131I isotopeon the Her-2(+) Breast Cancer cell Line, which will then establish a foundation for furtherradioimmunotherapy. [Methods] Anti-cerb2 monoclonal antibody Herceptin was labeled with 131Iusing IODO-GEN, then by MTT method to test its killing effect on SK-BR-3、MCF-7、A549 celllines respectively which express Her-2 on different levels. [Results] The immunoactivity of the131I-Herceptin is similar to that of Herceptin. 131I-Herceptin has stronger killing effect on celllines expressing Her-2(+) than Herceptin 、131I (P<0.05),while its killing effect on cell linesexpressing Her-2(-) is similar to that of 131I 、Herceptin. [Conclusion] 131I-Herceptin can speciallykill Her-2 positive cells.Key words: radioimmunotherapy ; 131I ;Herceptin ;label乳腺癌(Breast Cancer)是女性最常见的恶性肿瘤,术后复发和转移率较高。
Journal of China Pharmaceutical University 2023,54(6):729 - 742学 报天然产物去氢骆驼蓬碱糖基偶联物的合成及抗肿瘤活性评价刘晓涵1,谭云鹰1,李强1,陈旭1,傅俊杰1*,尹健1,2**(1江南大学生物工程学院糖化学与生物技术教育部重点实验室,无锡 214122;2江南大学生命科学与健康工程学院,无锡 214122)摘 要 基于本课题组前期工作基础,在天然产物去氢骆驼蓬碱(harmine )的C 7位氧上引入环己基甲基,并在N 9位上通过不同长度的烷基链偶联甲基2-氨基-β-D -葡萄糖苷,设计并合成了8个去氢骆驼蓬碱糖基偶联物(14a ~ 14h )。
体外抗肿瘤活性筛选和构效关系研究发现,偶联物的抗肿瘤活性随连接臂中烷基链长度的延长而增加。
化合物14h 对MDA -MB -231乳腺癌细胞的增殖抑制活性显著优于去氢骆驼蓬碱。
与去氢骆驼蓬碱相比,糖基的引入改善了化合物14h 的水溶性,并通过Warburg 效应提高了化合物14h 的肿瘤细胞选择性。
机制研究发现化合物14h 可诱导MDA -MB -231细胞凋亡和G 0/G 1期细胞阻滞,并能通过干扰细胞上皮-间充质转化进程抑制肿瘤细胞迁移。
本研究为基于去氢骆驼蓬碱的抗肿瘤药物的开发提供了新思路。
关键词 去氢骆驼蓬碱;2-氨基-2-脱氧-D -葡萄糖;糖基偶联药物;抗肿瘤活性中图分类号 R914 文献标志码 A 文章编号 1000 -5048(2023)06 -0729 -14doi :10.11665/j.issn.1000 -5048.2023041101引用本文 刘晓涵,谭云鹰,李强,等.天然产物去氢骆驼蓬碱糖基偶联物的合成及抗肿瘤活性评价[J ].中国药科大学学报,2023,54(6):729–742.Cite this article as : LIU Xiaohan ,TAN Yunying ,LI Qiang , et al . Synthesis and antitumor activity evaluation of glycoconjugates derived from natural product harmine [J ].J China Pharm Univ ,2023,54(6):729–742.Synthesis and antitumor activity evaluation of glycoconjugates derived from natural product harmineLIU Xiaohan 1, TAN Yunying 1, LI Qiang 1, CHEN Xu 1, FU Junjie 1*, YIN Jian 1,2**1Key Laboratory of Carbohydrate Chemistry and Biotechnology (Ministry of Education), School of Biotechnology, Jiangnan University,Wuxi 214122; 2School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, ChinaAbstract Based on our previous work, the study herein designed and synthesized eight glycoconjugates of natu⁃ral product harmine (14a-14h )by introducing a cyclohexylmethyloxyl group at its C 7 position and coupling a methyl -2-amino -β-D -glucopyranoside to the N 9 position through different lengths of alkyl chains.In vitro anti -tumor activity screening and structure -activity relationship studies showed that the antitumor activity of the conju⁃gates increased with the lengthening of the alkyl chain in the pound 14h exhibited significantly better proliferative inhibitory activity against MDA -MB -231 breast cancer cells than harmine.As compared to harmine, the introduction of the carbohydrate moiety improved the water solubility of compound 14h and enhanced its tumor cell selectivity through the Warburg effect.Mechanism of action studies revealed that compound 14h induced apoptosis and G0/G1 cell cycle arrest in MDA -MB -231 cells, and inhibited tumor cell migration by inter⁃fering with epithelial -mesenchymal transition process.This study provides a new approach for the development of antitumor drugs based on harmine.收稿日期 2023-04-11通信作者 *Tel :************* E -mail :jfu@**Tel :************* E -mail :jianyin@基金项目 江南大学糖化学与生物技术教育部重点实验室开放课题资助项目(No.KLCCB -KF202003)·论 文·729学 报Journal of China Pharmaceutical University 2023,54(6):729 - 742第54 卷Key words harmine; 2-amino-2-deoxy-D-glucose; glycoconjugate drugs; antitumor activityThis study was supported by the Open Project of Key Laboratory of Carbohydrate Chemistry and Biotechnology (Ministry of Educa⁃tion), Jiangnan University (No.KLCCB-KF202003)恶性肿瘤是全球第二大致命疾病,其发病率和病死率持续上升,严重威胁人类生命安全[1]。
·综述·免疫治疗在复发/难治性急性B淋巴细胞白血病中的应用Δ初琪慧1*,高彤2,曲素欣1,闫美兴1 #(1.青岛大学附属妇女儿童医院药学部,山东青岛 266034;2.青岛大学附属医院药学部,山东青岛 266003)中图分类号 R973;R733.71文献标志码 A 文章编号 1001-0408(2024)07-0886-04DOI 10.6039/j.issn.1001-0408.2024.07.21摘要免疫治疗作为一种新兴的治疗方法,被证实能够改善复发/难治性急性B淋巴细胞白血病(B-ALL)患者的预后,具有良好的应用前景。
其中,嵌合抗原受体修饰的T细胞免疫疗法(CAR-T)和单克隆抗体免疫疗法显示出巨大的应用潜力,多款药物已被批准上市。
本文对上述两种疗法治疗复发/难治性B-ALL的临床应用情况进行归纳总结,得出CAR-T是一种个体化免疫疗法,理想靶标的选择是其发挥作用的重要环节,目前其临床研究中理想的靶点包括CD19、CD22、CD19/CD22;单克隆抗体主要包括博纳吐单抗和奥加伊妥珠单抗,其对复发/难治性B-ALL显示出良好的疗效。
免疫治疗比常规化疗显示出更优异的治疗效果,拓宽了复发/难治性B-ALL治疗方案的选择面。
关键词复发/难治性急性B淋巴细胞白血病;免疫治疗;CAR-T疗法;单克隆抗体Application of immunotherapy in relapsed/refractory B-cell acute lymphoblastic leukemiaCHU Qihui1,GAO Tong2,QU Suxin1,YAN Meixing1(1. Dept. of Pharmacy,Qingdao Women and Children’s Hospital,Qingdao University,Shandong Qingdao 266034,China;2. Dept. of Pharmacy,the Affiliated Hospital of Qingdao University, Shandong Qingdao 266003, China)ABSTRACT Immunotherapy,as an emerging treatment method,has been proven to improve the prognosis of patients with relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL)and has good application prospects. Immunotherapy,including chimeric antigen receptor T cell immunotherapy (CAR-T)and monoclonal antibodies,has shown great potential for application,and has been approved for marketing. This article summarizes the application of the above two therapies in the treatment of relapsed/ refractory B-ALL,and concludes that CAR-T is a kind of personalized immunotherapy,and the selection of ideal targets is an important part of its action. Currently,the ideal targets in clinical studies include CD19,CD22and CD19/CD22. Monoclonal antibodies, including blinatumomab and inotuzumab ozogamicin, have shown superior therapeutic efficacy for relapsed/refractory B-ALL. Immunotherapy has shown superior therapeutic effects compared to conventional chemotherapy,expanding the selection of treatment options for relapsed/refractory B-ALL.KEYWORDS relapsed/refractory B-cell acute lymphoblastic leukemia; immunotherapy; CAR-T therapy; monoclonal antibodies急性淋巴细胞白血病(acute lymphoblastic leuke‐mia,ALL)是一种儿童及青少年常见的恶性血液肿瘤,其中急性B淋巴细胞白血病(B cell-acute lymphoblastic leukemia,B-ALL)发病率最高,占85%左右[1],其特征是骨髓中未成熟淋巴样细胞的异常增殖和堆积[2]。